Pump.



J. L. LATTA,

PUMP.

APPLICATION FILED DEC.15,1910.

Patented AugL 8, 191i,

3 SHEBTSvSHEET l.

LGOQOQT.

inventor;

Attorneys.

Witnesses J. L. LATTA.

PUMP.

APPLICATION IILED DEG.15,191U.

Patented Aug-v8, 1911.

3 SHEETS-SHEET 2.

. @ef/MMM Witnesses Attorneys.

J. L. LA'FA.l

UMP.

APPLIGATION FILED DBG.15,1910.

Eatented Aug, 8, 1911.

3 SHEETS-SHEET 3.

Attorneys.

JOHN LEE LATTA, OF HICKORY, NORTH CAROLINA.

PUMP.

i ,eeaoei Specification of Letters Patent.

Application filed December l5. 1910.

Patented Aug. 8, 1911. Serial No. 597,506.

To all 'whom it may concern:

Be it known that l, Joux L. lrvr'ra, a citizen of the United Statesr`residing at Hickory. in the county ot' Catawba and State of NorthCarolina, have invented a new and useful Pump, of which the following isa specification.

This invention relates to pumps, and more especially to those employingcompressed air for elevating water or other liquid; and the objecty ofthe same is to produce certain improvements in my United States vPatentNo. 947,327 and issued February 1. 1910.

To this end the invention cous sts in the details ot' constructiondescribed and claimed herein which differ from those set forth in saidpatent7 all as shown in the drawings wherein-e Figure 1 is a Verticalsectional view ot al sectional view at right angles thereto, partly insection. Fig. 3 an enlarged elevation of the upper portion of the pumpwith the easing of the auxiliary valve removed. Fig. 4' i's a section onthe line 4 4 of Fig. Fig. 5 is a section on the line 5 5 of Fig. 4. Fig.6 is an elevation of the inner wall of the auxiliary f'alve iasing,viewed from the line G-t in Fig. 5. Fig. 7 is a eentral hori-I zontalsection through the auxiliary valve and its easing. Fig. S is a detailof the leather-capped valve therein. Fig. t) is an enlargedseetionaldetail through one ot the. trip valves.

The pump forming the subject matter of the present invention is designedmore peeially for use in connection with Water pumping or ele "atingdevices where compressed air is employed to alternately displace thewater Yfrom a pair of tanks or eylA inders, and in the d awiugs there isshown a pair of tanks 5 and (3 each provided with a water inlet valve Topeningunder the in tluenee o'l" lgravity or external pressure andclosing' when the air is acting' to force the water from the chamber.llaeh tank or eylinder is provided with a discharge pipe 8 having` aCheck valve 5) disposed within the same. Closing the, upper ends of thetanks 5 and t is a casting' 10 having a valve easing or eylinder 11secured thereon, and eonnet-ted to a suitable souree ot eompressed airsupply through the medium ot a pipe 12.

The main valve 13 is loosely mounted tor sliding' movement in the easing11, and has its sides eut away into pockets 1i. at about the eenter otits length7 which pockets are connected by a passage 140 euty acrossthe. bottom ot' the valve, and whieh in the ret-iproeat'ion ot the valvealternately registers with air inlet ports 15 and 11S leading to thevadjacent water containingtanks and through which air is admitted to theinterior of the tanks for the purpose of displacing, the water thereinand discharging the same through the pipes ,8. Longitudinally beyond theinlet ports 15 and 16 are exhaust. portsv 1T and 18 through whieh thedisplaced air t'rom the interior of the tanks is alternately exhaustedin this operation, and in the bottom of the main valve near its ends areformed outlet poekets 141 as best seen in Fig. which alternately connectsaid inletI ports 15 and 1G with the exhaust ports 17 and It? bored intothe bottom of the fasing 1.1. so that the air from the interior ot'the't'anksl is alternately diseharged or eX- hausted as the main valve 3travels back and forth. The ends ot' the main valve 13 have projeetionsQ53 (preferably annular ribs) which bear against similarly shaped piecesof yieldable material 2") seated in recesses in the ends or heads 24 otthe easing, whereby the strokes ot' the valve are eushioi'led.

ln the. upper side of the. main valve at its center is formed anelongated pocket 147 as best seen in Fig', 1 (and whieheonnectls the.side pockets 1-1- as best seen in Fig. 2) and from the ends ot thiselongated pocket `holes 148 extend to and open out through the ends otthe valve` The inner endsof these holes loosely reeeive stems 149 at theextremities ot a spool valve 150 mounted loosely in the pocket 147 whiehwe may therefore calll the spool pocket, and whieh is slightly longerithan the spool valve so that thelatter has a little lost. motionlongitudinally therein. One of said holes 14B may slide loosely over aguide rpd 151 'arried hy one of the heads 24- of the easing' 0 a; toprevent the valve E troin rotatingr in its plaee.

-'l`he auxiliary valve reeiproeatea rather looxel'v in a easing' 25 at.one side ot the nlain eaaine' 11 as liest seen in l"i; '2 'intl 5. andthis auxiliary valve iti ifa olefiousl'v for the purpose of eontrolline'the position o'l" the niain valve. whereas the latter eontrols the inletand exhaust t't,eoinpre. setl air with whieh the pumpingr iS doney 'Thevalveit'selt" is; provided near its' end# with annular grooves QSalternately ref fiatering' with portaI Q9 and El() whit-h lead tooppo;ite enda and through the heatlx 2-1 ol the niain valve ea-siner(and within the ring' ot yieldahle inaterial it einployetll. and midwayYhetween these grooves is a poeket QT in whieh is mounted the l'atherwupvalve liest Seen in lfig'. 8. rVhiS` is in the shape ot a plugv 1R71elosely fitting' Said poeket and horetl longitudinally with a fine hole1911 whose inner end ia norniallv elosed h v a l\ather rup 1ST heldl inplaee luy a weak Spiral Spring 1\:` rest ing' on the hottoni of thepoeket QT. lhe position ol' parts is sueh that' the fine hole registerswith the port 30 when the other port 29 registers with one otl thegrooves 2S. and viee-versa. as seen in Fie'. 'l`he ends ot' theauxiliary valve inay have proieetions 12.", engaging viehlahle inaterialllein the heads otl iteI easing, like the extrexnities'ot' the niainvvalve as ahove deserihed: and through the valve easing' (prefer:hlytluoneh its hottoin at the eenter thereof) extendsI a 1guide rod orpin 250 whose inner entl eue'aje'es a groove 21S in the hottoin of the.auxiliary valve to prevent the latter troni rotating within its 'aainfez,\t either `'iile of said guide is an exhaust port .'t leadingr throughthe auxiliar) valve easing to the outer air. and these exhaust ports are#pareil so as to register with the `grooves 2S alternately ineolninunieation with the exhaust ports 29 and itt) leadiner 'from theends of the main valve easing. liwtetl within eaeh tank ia r tloat 41whose lever n `ar its pivot has a ret-ess 12 in whichis tilted a.vuleanit'e, disk lil adapted when the float risey `to elose against al-eat to eonatitutin"r what l terln the trip valve." Then the floatdest-ends the. paekingj disk 1S opens' a port. 37 which eoninnuiieateswith a pipe 35 that rises throughout the length o1'y the tank and entersthe easting 10. 'l`he latter ls eorerl with tineI passages 31 and $12eonnnunieating' with the pipes 35 and leatling upward au liest Seen inFie'. 2, and these paaaagges in turn eonununicate with similar passageslt) ansl'() in the auxiliary valve easing' (as hes( Seen in Figs. 5 and(il whieh latter eroeI eaeh other and open into the interior thereof asshown.

Tn operatio'` compressed air` entera the pipe 1Q in Fig'. 1, passesaround the main valve to the point 110. down through the port 15 to theright hand tank 5 which 1S then tilletl with water. andtlrives thelatter out through the (lieharee S and cheek valve .t. ll'hen the waterlevel therein tallS helow the Iloat -tl the trip valve (see Fig'. 9) isopened and a partl oi" the eoniprtwaetl air ltowa1 up the` pipe 35 andthrough the tine passagea 32 and 320 and into the auxiliary valve asing'at li't'svlegtt end. The auxiliary valve is h v this-'air presiuredriven to the right to the poeition #hown in Fig', 1i (the air :forwardot' it eseapinu' slowly around it hy reason ot its loosenessl. and thisthrows the le'tt hand port t'roni the inain valve easing intoeonnnuniration with the exhaust port #.16 in the auxiliary valve. easingas there shown. The rel xase ot' presfure within the left end. ot' theniain valve 'rising' in the poaition lhown in Fie'. .1. antl hevontl thele'tt head ot' the spool valve ltlnperinita the, latter to niove to thelett. as ity will under the torce ot the inrush ol' t-olnpressetl airthrough pipe 12. thevehy uin'overing' the right hand hole 119 throughwhieh passes tfoinpreSSed air to the right end ot' the niain valve 13,and the latter is therelw foreihly driven to the lett liv the. power otthe tronipreed air @etere it ran enter either o1. the tanks. ln themoveinents ot' the inain valve to the lett' the. air beyond 'it isexpelled through the exhaust as explained. until the rih Q3 Seataagainat the .vieldahle material 22. The shitting of the inain valveohviou.--;l v switehea the. inlet ot.' eonipressetl air tothe other tankand the operation is repeated. the water rises in the othertank. itlitt. eloses the trip valve lahown in hie). and the air trapped ahove itis then expelled through the port It? in th eastinen 10 and out'Vthrough the exhaust port 17 in the easingY ot' the niain valve.

tature peeuliar to 'the preSent invention is that in the niovenienta otthe aux-- iliary valvt.` itsl eup valve (see Fig. S) comes alternatelyunder the ports 'Btl and 30. and the pressure of the air at thecorresponding end o1 the nlain valve. easingT passes through the tinehole in the plug' and Seeks t0 escape. The plug' heine' larger indiameter than the port whieh it covers7 Sullieient' pressure isaeennxulated heneath the plug' to 'foren it tightly toward said port.and thereby the eseape ot the compressed air is prevented and prat-tie:ll all ol itl is delivered to the tank and elnplovetl to expel the watertherefrom.

what is elainletl a5' new is:

'1. A deviee of the elasal tleserihed including' a plurality otupright.v litpiid-eontaining tanks eaih ha viner inlet'. and diseharg'ey'alves. a niain valve easing eonneeted with a source o1n|n'e.-:. e lair y uppl v. the easing' ha ving inlety porteI leading' respectivelyt0`said tank` and also having outlet ports adjacent there-,1,y passageat that time, a cup valve over the to, and a main valve reciprocating insaid 'asing and adapted to alternately switch the compressed an' intoone4 tank and open the outlet from the other; an auxiliary valvev asmghaving two exhaust ports and passages through the heads of the mainvalve casing, an auxiliary valve reciprocating in said casing and havinggrooves spaced so as to alternately switch one of said passages intocommunication with one of said outlets and a pocket between saidgrooves, a spring supported plug loose in said pocket and having afinevhole adapted to register with the other passage at that time, a cupvalve over the lower end ot' said hole, and means for reciprocating saidauxiliary valve by the exhaustot air alternately from said tanks.

2. A device ofthe class described including apluralitypfliquid-containing tanks, a main valve casing, a main valvereciprocatingin said casing and adapted to alternately switch the inletof compressed air into one tank and open the outlet trom the other; anauX- iliary valve casing, an auxiliary valve reciprocating in saidcasing and having grooves spaced so as to `alternately switch one ofsaid passages intoA communication with one of said oiitlets, and apocket between said grooves, a spring supported plug loose in saidpocket and having a fine hole adapted to register with the other passageat that time, a cup valve over the lower end of 'said hole; pipesdepending from said 'casing into .said tanks, the casing being coredwith fine passages from the upper ends of the pipes through theauxiliary valve casing to the respectively opposite ends thereof, andmeans for yadmitting air to the lower ends of said pipes as the water inthe' tanks descends.

3. 'A device of the class described including a plurality of uprightliquid-containing tanks each having inlet and discharge valves, acastingclosing their upper ends, a main valve casing on the castingconnected with a source of compressed air supply, the casing and castinghaving cored inlet ports leading respectively to said tanks and alsohaving outlet ports adjacent thereto, and a, main ,/valve reciprocatingin said casing and having pockets spaced so as to alternately switch theinlet of compressed air into one tank and open the outlet from theother; an auxiliary valve casing having two exhaust ports and passagescored through its wall and through the heads'of the main valve casing,an auxiliary valve reciprocating in said casing and having groovesspaced so as to alternately switch one of said passages intocommunication with one of said outlets and a 'pocket between saidgrooves, a spring supypoi-telly\lug loose in said pocket and having atine vtile adapted to register with the other l l i l lower end ol saidhole, and means for reciprocating said auxiliary valve b v the exhaustof air alternately t'rom said tanks.

et. device of the class described including a plurality of uprightliquitl-containing tanks each having inlet and discharge valves, acasting closing their upper ends, a main valve casing on the lastingconnected with a source otI compressed air supply, the casing andcasting having cored inlet ports leadingl respectively to said tanks andalso having outlet ports adjacent thereto, and a main valvereciprocating in said casing and having pockets spaced so as toalternately switch the inlet ol compressed air into one tank and `openthe outlet from the other; an auxiliary valve casing having two exhaustports and passages cored through its wall and through the heads of themain valve casing, an auxiliary valve reciprocating in said casing andhaving grooves spaced so as to alternately switch one of said passagesinto communication with one ot said outlets, and a pocket between saidgrooves, a spring supported plug'loose in said pocket and having a tinehole adapted to register with the other passage at that time, a cupvalve over the lower end of said hole; pipes depending from said castinginto said tanks, the casting being cored with tine passages from theupper ends ofthe pipes through the auxiliary valve casing to therespectively opposite ends thereoffzind means for admitting air tothelower .ends of said pipes as the water in the tanks descends. t

A devieeofthe class described including a' plurality of uprightliquid-containing tanks each havinginlet and discharge valves,` a'casting closing their upper ends, a. main valve casing on the castingconnectml with a source of compressed air supply, the casing and castinghavinfr cored inlet ports leading respectively to said tanksI and alsohaving outlet portsadjacentthcreto, and a main valve rtariprmfating insaid casing and having pockets spaced so as to alternately switch theinlet of compressed ai r intoonevtank and open the outlet from theother; an aux iliary valve casing having two exhaust ports and passagescored through its wall and through Ithe heads of the main valve casing,an auxiliary valve. rcciprmrating in said casing and having groovesspaced so as to alternately switch one of said passages intocommunication with one of said outletsv` and a pocket between saidgrooves, a spring supported plug loose in said pocket and having a tinehole adapted to register with the other passage'at thattimfe, a cupvalve overthe lower' end of saidhole; pipes depending from said castinginto said tanks, the easting being cored with fine passages from theupper ends of the pipes through the auxilian-y vulve casing io (herespectively oppo- In testimony that I Claim the foregoing site @ndsthereof, :md a trip vulve nt the 1 as my own, I have hereto nfxed mySgnalower und of @mh pipo comprising' 1 seul, n I ture in the. presenceof two Witnesses. pirotml lvwr fnl-[ving :l packing disk adnpi- JOHN LEELATTA.

5 vgl (0 dos@ against 1110 scat, und n H0211 \Vii'11esses:

wlwrr-Irr tlw vulve is openvd by the descent I". A. HENDERSON, 0i' :iwmm: N. W. CLARK.

